[Co Kerry-disambiguation:there is a listing for O Dulinge, which would be the transplanted Ó Dúnlaing sept, who also came from Co Laois. This name is usually anglicised as Dowling].

By the time of Griffith's 'Primary Valuation' (1847-64) Delany is the most common spelling, and households were found in counties Laois (727) Kilkenny (259) and Tipperary (214). Delaney registers lower numbers: Laois (18) Offaly (7) etc.

In the Registrar General's Report on births in 1890 Delan(e)y is the most common entrant for Co Laois.

There is also a distinct name of French origin, Delaunay (De l'Aunay) which may have become Delaney in some instances in Britain; though it is likely most Delaneys there too would be of Irish immigrant stock.The French name, meaning - of the alder grove, is still extant in France. Variants of it are Daunay, Dawnay etc. which are mostly found in Britain.